/*div.banner*/
div.banner{
    position: relative;
    margin: 0 auto;
    height: 858px;
}
div.banner ul {
    height: 858px;
    position: absolute;
    top: 0;
    left: -;
    overflow: hidden;
}
div.banner ul li {
    float: left;
    
    overflow: hidden;
    position: relative;
    /*background: #000;*/
}
div.banner ul li img {
    width: 100%;
    height: 100%;
}
div.banner .preNext{
    position: absolute;
    width: 49px;
    height: 49px;
    top:400px;
    cursor: pointer;
    background: url(image/sprite.png) no-repeat;
}
div.banner .pre {
    left: -20px;
    background-position: left bottom;
}
div.banner .next {
    right: -20px;
    background-position: right bottom;
}
